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/*********************************************************************
######################################################################
##
## Created by: Denis Filatov
## Date : 10.11.2005
##
## Copyleft (c) 2003 - 2015
## This code is provided under the CeCill-C license agreement.
######################################################################
*********************************************************************/
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <string.h>
#include <limits.h>
#include <ctype.h>
#include <assert.h>
#include <stdlib.h>
#include "copts.h"
#ifdef _MSC_VER
#define inline __inline
#define strcasecmp _stricmp
#define strdup _strdup
#define _CRT_SECURE_NO_WARNINGS
#endif
#define COPT_AFLAG_ERROR 0x10000
#define COPT_AFLAG_PRESCAN 0x08000
#define COPT_AFLAG_LOPT 0x04000
#define COPT_AFLAG_AUTOHELP 0x02000
static int do_coptions (int argc, char* argv[], int flags, copt_t* opts);
static int set_option_value(copt_t* opt, const char * option, char* val);
static int copt_addr_assign(unsigned long* addr,const char* val);
inline
static int call_callback(const copt_t * opt, const char * option, const copt_value_t * value);
static void print_opt_help(FILE* f, copt_t* opt, int err, const char* errval);
int coptions(int argc, char* argv[], int flags, copt_t* opts)
{
int rc = 1, ahflag = 0;
copt_t *o;
if(0 == (flags & COPT_NOAUTOHELP)){
ahflag = COPT_AFLAG_AUTOHELP;
}
if(0 == (flags & COPT_NOCONFIG) || ahflag ){
for(o=opts; o->type != COPT_END; o++){
unsigned short t = o->type&COPT_TYPE_MASK;
/* check for config files */
if(0==(flags & COPT_NOCONFIG) && t == COPT_CFGFILE){
/* check for config options.
* just options with type COPT_CFGFILE
* will be processed */
rc = do_coptions(argc, argv, flags|COPT_AFLAG_PRESCAN|COPT_NOREORDER, opts);
if(rc < 0){
if(rc == COPT_EHELP){
if(0==(flags&COPT_NOHELP_MSG)){
coptions_help_ex(stdout, argv[0], flags, opts, NULL, NULL, NULL);
}
return rc;
}
if(0==(flags&COPT_NOERR_UNKNOWN)){
return rc;
}
}
if(o->vptr){
const char * cfgname = *((const char **)o->vptr);
if(cfgname){
rc = coptions_load(cfgname, NULL, flags, opts);
if(rc < 0){
if(0 == (flags&COPT_NOERR_MSG)){
fprintf(stderr, "%s: config load error\n", cfgname);
}
if(flags & COPT_ERR_CONFIG){
return rc;
}
}
}
}
} else if(t == COPT_HELP && ahflag){
/* check for autohelp */
ahflag = 0;
}
}
}
/* process other options except of COPT_CFGFILE */
return do_coptions(argc, argv, flags|ahflag, opts);
}
static void move_args(char * argv[], int to, int from, int count)
{
if( from > to){
while(from > to){
int i;
for(i=from; i<from+count; i++){
char * p = argv[i];
argv[i] = argv[i-1];
argv[i-1] = p;
}
from --;
}
}else{
while(from < to){
int i;
for(i=from+count-1; i>=from; i--){
char * p = argv[i];
argv[i] = argv[i+1];
argv[i+1] = p;
}
from ++;
}
}
}
static int do_coptions(int argc, char* argv[], int flags, copt_t* opts)
{
int i, rc;
int searchopts = 1;
copt_t* o=NULL;
copt_t* copt = NULL;
copt_t* onopt = NULL;
coptype_t t;
int nargc=argc;
assert(opts);
for(i=1; i<nargc; i++){
if(NULL == copt){
char * aopt = argv[i];
/* check for option */
if(searchopts && aopt[0]=='-' && aopt[1] != 0){
if(aopt[1] == '-'){
/* this is long option */
if(aopt[2] == 0){
/* -- - stop parsing options */
searchopts = 0;
continue;
}
/* check autohelp */
if(flags & COPT_AFLAG_AUTOHELP){
if(0==strcmp(aopt+2, "help")){
return COPT_EHELP;
}
}
/* search given option */
for(o = opts; COPT_END != o->type; o++){
int ol;
if(NULL == o->lopt) continue;
t = o->type&COPT_TYPE_MASK;
ol = (int)strlen(o->lopt);
if( (aopt[2+ol]==0 || aopt[2+ol]=='=')
&& 0==strncmp(o->lopt, aopt+2, ol)){
/* option found */
if(t == COPT_HELP){
return COPT_EHELP;
}
if(aopt[2+ol]=='='){
if(0==(flags&COPT_AFLAG_PRESCAN) || t == COPT_CFGFILE){
rc = set_option_value(o, argv[i], aopt+ol+3);
if(rc<0){
if(0==(flags&COPT_NOERR_MSG)){
print_opt_help(stderr, o, flags|COPT_AFLAG_ERROR, argv[i]);
}
if(0==(flags&COPT_NOERR_ARG)){
return -i;
}
}
}
}else if(t == COPT_BOOL || t == COPT_BOOLI){
if(0==(flags & COPT_AFLAG_PRESCAN)){
set_option_value(o, argv[i], NULL);
}
}else{
copt = o;
}
/* move this option argument to the end of list */
move_args(argv, argc-1, i, 1);
i--;
nargc--;
break;
}
}
if(COPT_END == o->type){
if(0==(flags&COPT_NOERR_MSG)){
fprintf(stderr, "Unknown option '%s'\n", argv[i]);
}
if(0==(flags & COPT_NOERR_UNKNOWN)){
return 0-i;
}
}
}else{
/* short options */
aopt++; /* skip first '-' */
while(*aopt){
/* check autohelp */
if(flags & COPT_AFLAG_AUTOHELP){
if(*aopt == 'h' || *aopt == '?'){
return COPT_EHELP;
}
}
for(o = opts; COPT_END != o->type; o++){
if(NULL == o->sopts) continue;
t = o->type&COPT_TYPE_MASK;
if(strchr(o->sopts, *aopt)){
/* option found */
char szopt[3]={'-',0,0};
szopt[1] = *aopt;
if(t == COPT_HELP){
return COPT_EHELP;
}
if(aopt[1] == 0){ /* -p -b 13 */
if(t == COPT_BOOL || t == COPT_BOOLI){
if(0 == (flags&COPT_AFLAG_PRESCAN)){
set_option_value(o, szopt, NULL);
}
}else{
copt = o;
}
aopt++;
}else if(aopt[1] == '='){ /* -p=123 */
if(0==(flags&COPT_AFLAG_PRESCAN) || t == COPT_CFGFILE){
rc = set_option_value(o, argv[i], aopt+2);
if(rc<0){
if(0==(flags&COPT_NOERR_MSG)){
print_opt_help(stderr, o, flags|COPT_AFLAG_ERROR, argv[i]);
}
if(0==(flags&COPT_NOERR_ARG)){
return -i;
}
}
}
while(*aopt) aopt++;
}else{ /* -p123*/
if(0==(flags&COPT_AFLAG_PRESCAN) || t == COPT_CFGFILE){
if( t == COPT_BOOL || t == COPT_BOOLI ){
set_option_value(o, szopt, NULL);
}else{
rc = set_option_value(o, szopt, aopt+1);
if(rc<0){
if(0==(flags&COPT_NOERR_MSG)){
print_opt_help(stderr, o, flags | COPT_AFLAG_ERROR, argv[i]);
}
if(0==(flags&COPT_NOERR_ARG)){
return -i;
}
}
}
}
while(*aopt) aopt++;
}
break;
}
}
if(COPT_END == o->type){
if(0==(flags&COPT_NOERR_MSG)){
fprintf(stderr, "Unknown option '%s'\n", argv[i]);
}
if(0==(flags & COPT_NOERR_UNKNOWN)){
return 0-i;
}
aopt++;
}else{
/* move this option argument to the end of list */
move_args(argv, argc-1, i, 1);
i--;
nargc--;
}
}
}
}else{
/* check for nonoption callback */
if(0 == (flags & COPT_AFLAG_PRESCAN)){
if(onopt == NULL){
onopt = (void*)-1;
for(o = opts; COPT_END != o->type; o++){
if(o->type & COPT_CALLBACK){
if(o->lopt == NULL && o->sopts == NULL && o->vptr){
onopt = o;
break;
}
}
}
}
if(onopt != (void*)-1){
copt_value_t v;
v.v_str = argv[i];
rc = call_callback(onopt, NULL, &v);
if(rc < 0){
if(rc == COPT_EHELP) return rc;
if(0==(flags&COPT_NOERR_ARG)){
return -i;
}
}
}
}
}
}else{ /* prev is option */
t = copt->type & COPT_TYPE_MASK;
if(0==(flags&COPT_AFLAG_PRESCAN) || t == COPT_CFGFILE){
rc = set_option_value(copt, argv[i-1], argv[i]);
if(rc < 0){
if(0==(flags&COPT_NOERR_MSG)){
print_opt_help(stderr, o, flags | COPT_AFLAG_ERROR, argv[i - 1]);
}
if(0==(flags&COPT_NOERR_ARG)){
return 0-i-1;
}
}
}
copt = NULL;
/* move this option argument to the end of list */
move_args(argv, argc-1, i, 1);
nargc--;
i--;
}
}
if(copt){
/* last option was not completed */
if(0==(flags&COPT_NOERR_MSG)){
print_opt_help(stderr, o, flags | COPT_AFLAG_ERROR, argv[i - 1]);
}
if(0==(flags&COPT_NOERR_ARG)){
return 0-i-1;
}
}
return nargc;
}
static int set_option_value(copt_t* opt, const char * arg, char* val)
{
char* np;
copt_value_t value;
value.v_boolean = 0;
switch(opt->type & COPT_TYPE_MASK){
case COPT_HELP:
case COPT_BOOL:
value.v_boolean = 1;
case COPT_BOOLI:
if(val){
if( val[0] == '0'
||0==strcasecmp(val, "false")
||0==strcasecmp(val, "no")
){
value.v_boolean = !value.v_boolean;
}else if( !isdigit((int)(val[0]))
&& strcasecmp(val, "true")
&& strcasecmp(val, "yes")
){
return -1;
}
}
break;
case COPT_LONG:
if(!val) return -1;
value.v_long = strtol(val, &np, 0);
if(*np != 0) return -1;
break;
case COPT_ULONG:
if(!val) return -1;
value.v_ulong = strtoul(val, &np, 0);
if(*np != 0) return -1;
break;
case COPT_SHORT:
if(!val || !opt->vptr) return -1;
value.v_long = strtol(val, &np, 0);
if(*np != 0) return -1;
if(value.v_long>SHRT_MAX || value.v_long<SHRT_MIN){
return -1;
}
value.v_short = (short) value.v_long;
break;
case COPT_USHORT:
if(!val || !opt->vptr) return -1;
value.v_ulong = strtoul(val, &np, 0);
if(*np != 0) return -1;
if(value.v_ulong>USHRT_MAX){
return -1;
}
value.v_ushort = (unsigned short) value.v_ulong;
break;
case COPT_CHAR:
if(!val || !opt->vptr) return -1;
if(0==val[1]){
value.v_char = val[0];
}else{
value.v_ulong = strtoul(val, &np, 0);
if(*np != 0) return -1;
if(value.v_ulong>UCHAR_MAX){
return -1;
}
value.v_char = (unsigned char)value.v_long;
}
break;
case COPT_STRENUM:
{
const char ** p = (const char**)opt->vptr;
for(; *p && strcmp(*p, val); p++);
if(NULL == *p){
return -1;
}
value.v_long = (long)(p - (const char**)opt->vptr);
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}
break;
case COPT_STRLIST:
if(!opt->vptr || (opt->type & COPT_CALLBACK)) return -1;
case COPT_CFGFILE:
case COPT_PATH:
case COPT_STR:
value.v_str = val;
break;
case COPT_HOST:
if(0 > copt_addr_assign(&value.v_ulong, val)){
return -1;
}
break;
default:
return -1;
}
if(opt->type & COPT_CALLBACK){
return call_callback(opt, arg, &value);
}
switch(opt->type & COPT_TYPE_MASK){
case COPT_HELP:
case COPT_BOOL:
case COPT_BOOLI:
if(opt->vptr && opt->vptr != (void*)1){
*(int*)opt->vptr = value.v_boolean;
}else{
opt->vptr = ((char*)NULL) + value.v_boolean;
}
break;
case COPT_LONG:
case COPT_ULONG:
case COPT_CFGFILE:
case COPT_STR:
case COPT_PATH:
case COPT_HOST:
if(opt->vptr){
*(void**)opt->vptr = value.v_str;
}else{
opt->vptr = (void*)value.v_str;
}
break;
case COPT_STRLIST:
{
char ** p = opt->vptr;
*p = value.v_str;
opt->vptr = p + 1;
}
break;
case COPT_STRENUM:
opt->vptr = (void*)(((const char**)opt->vptr) + value.v_long);
break;
case COPT_SHORT:
case COPT_USHORT:
*(short*)opt->vptr = value.v_short;
break;
case COPT_CHAR:
*(char*)opt->vptr = value.v_char;
break;
default:
return -1;
};
return 0;
}
static int copt_addr_assign(unsigned long* addr,const char* val)
{
unsigned long n = 0;
unsigned long s = 0;
int cnt = 0;
while(*val){
if(*val == '.'){
if(cnt == 3){
return -1;
}
n = (n<<8) | s;
s = 0;
cnt++;
}else{
unsigned int c = *val - '0';
if(c > 9){
return -1;
}
s = s*10 + c;
}
val++;
}
if(cnt != 3){
return -1;
}
n = (n<<8) | s;
*addr = n;
return 0;
}
inline static int call_callback(const copt_t * opt, const char * option, const copt_value_t * value)
{
if(opt->vptr){
return ((copt_callback *)opt->vptr)(opt, option, value);
}
return -1;
}
void coptions_help_ex(FILE * f, const char * prgname, int flags, copt_t* opt, const char* usagestr,
const char* header, const char* footer)
{
const char * progname;
if(header){
fputs(header, f);
}
if(prgname){
progname = strrchr(prgname, '/');
if(progname) progname++;
else progname = prgname;
if(usagestr){
fprintf(f, "Usage: %s <options> %s\n", progname, usagestr);
}
fprintf(f, "Options:\n");
}else{
if(usagestr){
fprintf(f, "%s\n", usagestr);
}
}
while(opt->type != COPT_END){
if(opt->sopts || opt->lopt){
fprintf(f, " ");
print_opt_help(f, opt, flags, NULL);
}
opt++;
}
if(footer){
fputs(footer, f);
}
}
static int sprintf_option_value(const copt_t* const opt, char * const buf)
{
int ret = 0;
switch(opt->type&COPT_TYPE_MASK){
case COPT_BOOL:
if(opt->vptr && opt->vptr != (void*)1){
ret = sprintf(buf, "%s", ((*(int*)opt->vptr)?"true":"false"));
}else{
ret = sprintf(buf, "%s", ((opt->vptr)?"true":"false"));
}
break;
case COPT_BOOLI:
if(opt->vptr && opt->vptr != (void*)1){
ret = sprintf(buf, "%s", (*(int*)opt->vptr)?"false":"true");
}else{
ret = sprintf(buf, "%s", (opt->vptr)?"false":"true");
}
break;
case COPT_LONG:
ret = sprintf(buf, "%ld", *((long*)opt->vptr));
break;
case COPT_ULONG:
ret = sprintf(buf, "%lu", *((unsigned long*)opt->vptr));
break;
case COPT_SHORT:
ret = sprintf(buf, "%u", *((short*)opt->vptr));
break;
case COPT_USHORT:
ret = sprintf(buf, "%u", *((unsigned short*)opt->vptr));
break;
case COPT_CHAR:
ret = sprintf(buf, "%c", *((char*)opt->vptr));
break;
case COPT_STR:
case COPT_CFGFILE:
case COPT_STRENUM:
if(*(char**)opt->vptr)
ret = sprintf(buf, "%s", *(char**)opt->vptr);
else
ret = sprintf(buf, "NULL");
break;
case COPT_HOST:
{
unsigned int n = *(unsigned int*)opt->vptr;
sprintf(buf, "%u.%u.%u.%u",
n>>24, (n>>16)&0xFF, (n>>8)&0xFF, n&0xFF);
}
break;
}
return ret;
}
static const char* valnames[] = {
NULL, /* COPT_BOOL */
NULL, /* COPT_BOOLI */
"num", /* COPT_LONG */
"num", /* COPT_ULONG */
"num", /* COPT_SHORT */
"num", /* COPT_USHORT */
"chr", /* COPT_CHAR */
"str", /* COPT_STR */
"addr",/* COPT_HOST */
"path",/* COPT_PATH */
"str", /* COPT_STRLIST*/
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"str", /* COPT_STRENUM*/
"file",/* COPT_CFGFILE*/
NULL, /* COPT_HELP */
};
static void print_opt_help(FILE* f, copt_t* opt, int flags, const char* errval)
{
char *p, sz_help[256];
p=sz_help;
int err = flags&COPT_AFLAG_ERROR;
int t=opt->type&COPT_TYPE_MASK;
if(opt->sopts){
const char* po = opt->sopts;
while(*po){
if(po != opt->sopts) (*p++) = '|';
*(p++)='-'; *(p++)=(*po);
po++;
}
if(valnames[t]){
p+=sprintf(p, " <%s>", valnames[t]);
}
}
if(opt->lopt){
if(opt->sopts) p+=sprintf(p, " | ");
p+=sprintf(p, "--%s", opt->lopt);
if(valnames[t]){
p+=sprintf(p, "=%s", valnames[t]);
}
}
if(opt->helpstr){
while(p-sz_help<35){
*(p++) = ' ';
}
p+=sprintf(p, " : %s", opt->helpstr);
}
if(err){
*(p++)='\n'; *(p++)='\t';
if(errval){
p+=sprintf(p, "%s ", errval);
}
p+=sprintf(p, "Unsupported value");
}else{
if (0 == (flags & COPT_HELP_NOVALUES)){
if (t != COPT_HELP && t != COPT_STRLIST && 0 == (opt->type&COPT_CALLBACK)){
/* print default value */
*(p++) = '[';
p += sprintf_option_value(opt, p);
*(p++) = ']';
*p = 0;
}
}
}
fprintf(f, "%s\n", sz_help);
}
int coptions_load(const char* filename, const char * section, int flags, copt_t* const opts)
{
char* buf;
int line = 0;
int err = 0;
int in_sect = 0;
FILE* f = fopen(filename, "r");
if(f == NULL){
if(0 == (flags & COPT_NOERR_MSG)){
perror(filename);
}
return COPT_ERROR;
}
buf = (char*)malloc(1024);
while(fgets(buf, 1024, f)){
char *e, *val=NULL, *key = buf;
copt_t * o;
unsigned short t;
err = 1;
line ++;
while(*key && isspace((int)(*key))) key++;
if(0 == *key)continue;
/* search for section */
if(*key == '['){
if(section){
if(in_sect){
/* section loading finished */
in_sect =0;
break;
}
key++;
while(*key && isspace((int)(*key))) key++;
e = strchr(key, ']');
if(e == NULL) goto error;
*e = 0;
if(0==strcmp(section, key)){
in_sect = 1;
}
}
continue;
}
if(section && 0== in_sect) continue;
if(*key == '#' || *key == ';') continue;
e = strchr(key, '=');
if(NULL == e) goto error;
val = e+1;
while(e>key && isspace((int)(*(e-1))))e--;
if(e == key) goto error;
*e = 0;
while(*val && isspace((int)(*val))) val ++;
for(o=opts; o->type != COPT_END; o++){
if(o->lopt && 0==strcmp(o->lopt, key))
break;
}
if(COPT_END == o->type) {
err = 2;
goto error;
}
t = o->type & COPT_TYPE_MASK;
e = val + strlen(val);
while(e>val && isspace((int)(*(e-1)))) *(--e) = 0;
if( t == COPT_STR
|| t == COPT_STRLIST
){
if(0==strcmp("NULL", val) || 0==strcmp("null", val)) val = NULL;
else val = strdup(val);
}
if(set_option_value(o, key, val)){
err = 3;
goto error;
}
continue;
error:
if(0 == (flags & COPT_NOERR_MSG)){
switch(err){
case 1:
fprintf(stderr, "%s:%d: Syntax error in config file\n", filename, line);
break;
case 2:
fprintf(stderr, "%s:%d: Option is unknown\n", filename, line);
break;
case 3:
fprintf(stderr, "%s:%d: Unsupported value: %s\n", filename, line, val);
break;
}
}
if(flags & COPT_ERR_CONFIG){
break;
}
}
free(buf);
fclose(f);
return 0;
}